$87 Cheap Flights from Seattle (SEA) to Chicago (ORD)

View $87 flight on Wed, Aug 6, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Chicago O'Hare Intl. Airport (ORD)

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Cheap Flights from Seattle to Chicago (SEA-ORD)

Prices were available within the past 7 days and start at $87 for one-way flights and $176 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Wed, Aug 6 - Thu, Nov 27
SEA
Seattle
ORD
Chicago
$176 Roundtrip, just found
$176
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, Aug 6 from Seattle to Chicago, returning Thu, Nov 27, priced at $176 just found
Bargain Flight
Sat, Aug 30 - Sun, Aug 31
SEA
Seattle
ORD
Chicago
$178 Roundtrip, found 2 hours ago
$178
Roundtrip
found 2 hours ago
Select Bargain Flight flight, departing Sat, Aug 30 from Seattle to Chicago, returning Sun, Aug 31, priced at $178 found 2 hours ago
Alaska Airlines
Sat, Aug 30 - Sun, Aug 31
SEA
Seattle
ORD
Chicago
$179 Roundtrip, found 2 hours ago
$179
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Seattle to Chicago, returning Sun, Aug 31, priced at $179 found 2 hours ago
Delta
Sat, Aug 30 - Sun, Aug 31
SEA
Seattle
ORD
Chicago
$179 Roundtrip, found 2 hours ago
$179
Roundtrip
found 2 hours ago
Select Delta flight, departing Sat, Aug 30 from Seattle to Chicago, returning Sun, Aug 31, priced at $179 found 2 hours ago
Spirit Airlines
Wed, Aug 6 - Wed, Aug 20
SEA
Seattle
ORD
Chicago
$181 Roundtrip, found 1 day ago
$181
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Wed, Aug 6 from Seattle to Chicago, returning Wed, Aug 20, priced at $181 found 1 day ago
Bargain Flight
Wed, Sep 24 - Wed, Sep 24
SEA
Seattle
ORD
Chicago
$182 Roundtrip, found 1 day ago
$182
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Wed, Sep 24 from Seattle to Chicago, returning Wed, Sep 24, priced at $182 found 1 day ago
Bargain Flight
Fri, Oct 31 - Sat, Nov 1
SEA
Seattle
ORD
Chicago
$183 Roundtrip, found 1 day ago
$183
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Fri, Oct 31 from Seattle to Chicago, returning Sat, Nov 1, priced at $183 found 1 day ago
Alaska Airlines
Sat, Aug 23 - Sat, Aug 30
SEA
Seattle
ORD
Chicago
$184 Roundtrip, just found
$184
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Aug 23 from Seattle to Chicago, returning Sat, Aug 30, priced at $184 just found
United
Wed, Aug 27 - Sun, Aug 31
SEA
Seattle
ORD
Chicago
$184 Roundtrip, found 2 hours ago
$184
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Aug 27 from Seattle to Chicago, returning Sun, Aug 31, priced at $184 found 2 hours ago
Alaska Airlines
Tue, Aug 26 - Sat, Aug 30
SEA
Seattle
ORD
Chicago
$186 Roundtrip, found 1 hour ago
$186
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Tue, Aug 26 from Seattle to Chicago, returning Sat, Aug 30, priced at $186 found 1 hour ago

Find the cheapest month to fly from Seattle (SEA) to Chicago (ORD)

November is typically the cheapest month to fly

From $96 - $362 per traveler.

Graph displaying average flight prices per month

Flights from Seattle (SEA) to Chicago (ORD)
Origin airport
Seattle - Tacoma Intl.
Destination airport
O'Hare Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$176
Distance
1715 mi
Average flight time
6 hours 2 mins

Seattle to Chicago Flights

The cheapest times to fly from Seattle to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Chicago are during the month of August. You can find some of the cheapest flights from Seattle to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Chicago

Sunday is one of the best days to book for cheap flights from Seattle to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $87 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) cost?
You can pick up cheap return flights starting at $99 from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving SEA on August 6 2025 and touching down at ORD. The price was last updated on July 12 2025 and has not changed since.
What is the cheapest month to fly from SEA to ORD?
The cheapest flights from SEA to ORD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
Skip the layovers and fly direct from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) with 4 carriers, including:

  • United Airlines
  • Alaska Airlines
  • Delta Air Lines

What is the cheapest airline that flies from SEA to ORD?
Currently, the cheapest carrier operating one-way flights from SEA to ORD is Alaska Airlines. You can jet off on this route from $53. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SEA on October 7 2025. Prices were last updated on July 12 2025 and have not changed since.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
Each day, an average of 8 direct flights take off from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD). Choose the departure time that best suits your travel plans.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
More passengers fly between SEA and ORD at 6 PM than at any other point in the day. Rather go when it's quieter? Consider flying outside peak hours and you could save on your ticket as well.
What day of the week has the most flights from SEA to ORD?
If you jet off on a Friday, you'll get the biggest range of choices for flights from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD).
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
Hop on the earliest flight at around 7:00AM UTC-8, heading out of Seattle - Tacoma Intl. Airport (SEA). You'll be in the air for about 4h 6m, coming in to land at O'Hare Intl. Airport (ORD) at approximately 1:06PM UTC-6.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
The average flight time from SEA to ORD is 4 hours and 4 minutes, covering a distance of 1,700 mi.
What airline has the least delays from SEA to ORD?
American Airlines has the strongest track record for on-time direct flights from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD), with an on-time rating of 88%. Use the Expedia App to see your flight schedule before you go and get real-time alerts about any trip changes.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
Opt for a flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Chicago from Seattle - Tacoma Intl. Airport (SEA)?
If you're traveling on a direct flight from Seattle - Tacoma Intl. Airport (SEA) to Chicago, you'll come into land at either O'Hare Intl. Airport (ORD) or Midway Intl. Airport (MDW).
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD) last-minute?
Holding off until just before your departure to book your flight from SEA to ORD often results in higher prices. While you may find some last-minute discounts, they're not always guaranteed. Keep your travel schedule open to maximize your chances of snagging a bargain.
Is it cheaper to book a SEA to ORD flight and hotel package?
Booking a SEA to ORD flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our extensive range of stays and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)?
You can usually reschedule or cancel your SEA to ORD flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

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